LINE

    Text:AAAPrint
    Sci-tech

    C919 jet undergoes rigorous testing

    1
    2018-07-19 10:45:02China Daily Editor : Li Yan ECNS App Download
    Crew members pose for a photo after a C919 plane's successful completion of a test flight from Shanghai to Dongying, Shandong Province, on July 12. (Photo by Zhou Guangxue/China News Service)

    Crew members pose for a photo after a C919 plane's successful completion of a test flight from Shanghai to Dongying, Shandong Province, on July 12. (Photo by Zhou Guangxue/China News Service)

    The C919, China's first domestically developed large passenger jet, is to undergo a series of tests before it hits the market by 2021.

    On May 11, the first C919 prototype underwent its first limit load test, which is also the first structural strength verification that is followed by the European Aviation Safety Agency, according to its manufacturer, Commercial Aircraft Corp of China Ltd, also known as COMAC.

    Some problems occurred when the load was increased to 137 percent of the limit. The design and engineering teams discussed possible solutions and completed the troubleshooting process. Later, the outline for the final test was approved by the Civil Aviation Administration of China and its European counterpart.

    On June 6, the first C919 prototype successfully completed its limit load test, and began preparations for a series of aircraft structure limit load tests, according to COMAC.

    "Strength tests include static tests, fatigue tests, resonance tests and bird-impact tests. The main purpose is to test the safety of the aircraft shell," said Zhu Lingang, deputy director of the aircraft structural strength engineering design department of Shanghai Aircraft Manufacturing Co Ltd.

    "Strength tests also examine the pressure, pulling force and torsion force that the aircraft structure can bear. We have been pursuing the balance between weight and safety," he said.

    From conducting its debut flight to obtaining airworthiness certification, an aircraft model needs to undergo more than 1,000 tests, including those related to high temperatures, high humidity, extreme cold, strong crosswinds, its minimum lift-off speed and stalling, according to COMAC.

    The company said it would send six aircraft on test flights in total and complete more than 1,000 compliance tests. Those aircraft will take test flights in Shanghai, Xi'an in Shaanxi province, Dongying in Shandong province, and Nanchang in Jiangxi province. Two other aircraft will only undergo ground tests, including static and fatigue tests.

    So far, 815 orders have been placed for the C919 from home and abroad.

    The ARJ21, China's first home-built regional passenger jetliner, completed more than 300 ground tests and 5,258 hours of test flights before it gained the model qualification certificate, according to figures provided by COMAC.

    The model conducted test flights in various plateau areas in China, as well as Changsha in Hunan province, Sanya in Hainan province, and in North America. It has been in commercial use for more than two years. With 78 to 90 seats, the aircraft has a flying range of 2,225 to 3,700 kilometers.

      

    Related news

    MorePhoto

    Most popular in 24h

    MoreTop news

    MoreVideo

    News
    Politics
    Business
    Society
    Culture
    Military
    Sci-tech
    Entertainment
    Sports
    Odd
    Features
    Biz
    Economy
    Travel
    Travel News
    Travel Types
    Events
    Food
    Hotel
    Bar & Club
    Architecture
    Gallery
    Photo
    CNS Photo
    Video
    Video
    Learning Chinese
    Learn About China
    Social Chinese
    Business Chinese
    Buzz Words
    Bilingual
    Resources
    ECNS Wire
    Special Coverage
    Infographics
    Voices
    LINE
    Back to top Links | About Us | Jobs | Contact Us | Privacy Policy
    Copyright ?1999-2018 Chinanews.com. All rights reserved.
    Reproduction in whole or in part without permission is prohibited.
    主站蜘蛛池模板: 洞口县| 泉州市| 灌阳县| 永年县| 海兴县| 循化| 泽普县| 汝南县| 汽车| 乌苏市| 闵行区| 荆门市| 汨罗市| 昭平县| 安陆市| 浠水县| 永春县| 南京市| 固安县| 中宁县| 仙桃市| 梅河口市| 公主岭市| 萨嘎县| 连平县| 分宜县| 清河县| 张家川| 玉山县| 康乐县| 顺昌县| 翁牛特旗| 昭平县| 杂多县| 衡水市| 望奎县| 察雅县| 阳泉市| 高邑县| 玉屏| 彩票|